Groenewald, P, T Vos, R Norman, R Laubscher, C van Walbeek, U Saloojee, F Sitas, D Bradshaw, and South African Comparitive Risk Assessment Collaboration Grou. “Estimating the Burden of Disease Attributable to Smoking in South Africa in 2000”. South African Medical Journal 97, no. 8 (September 19, 2007): 674–681. Accessed October 14, 2026. https://www.ajol.info/index.php/samj/article/view/13897.